Tycek

BF doesn't mean anything, but if you read the name of the car you will get "Beef Injection" which is a slang term for sexual intercourse.I don't know unfortunately what OL means. I tried to find it myself, but I didn't have any luck.

TheDandyManCan

Do you mean Surface to Air Missiles? I don't know how that olays into context, but... I have a feeling a lot of acronyms in GTA are either just made up on the spot or funny innuendoes like BF Injection.

Andreaz1

I meant the mission called S.A.M. I knew it was an abbreviation for Surface-to-Air Missile, but as they weren't actually in GTA III (only San Andreas) I didn't think it made sense. Now though that I think about what it is you do in the mission (Shoot down a plane with a rocket launcher) I realize that that is probably what they meant.